Semicircle

3 definitions found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Semicircle \Sem"i*cir`cle\, n.
     1.
        (a) The half of a circle; the part of a circle bounded by
            its diameter and half of its circumference.
        (b) A semicircumference.
            [1913 Webster]


  
     2. A body in the form of half of a circle, or half of a
        circumference.
        [1913 Webster]
  
     3. An instrument for measuring angles.
        [1913 Webster]

From WordNet (r) 2.0 [wn]:

  semicircle
       n : a plane figure with the shape of half a circle [syn: {hemicycle}]

From Moby Thesaurus II by Grady Ward, 1.0 [moby-thes]:

  22 Moby Thesaurus words for "semicircle":
     crescent, crescent moon, fifty percent, fifty-fifty, half,
     half circle, half-and-half, half-moon, hemicycle, hemisphere,
     horseshoe, lunula, lunule, mediety, meniscus, moiety, quadrant,
     scythe, sector, semisphere, sextant, sickle